:root{
  --bg-1: #226e6b;
  --bg-2: #06221e;
  --panel: rgba(255,255,255,0.03);
  --muted: #9fb8aa;
  --accent-1: #06b6a4;
  --accent-2: #10b981;
  --accent-3: #34d399;
  --glass: rgba(255,255,255,0.04);
  --radius: 14px;
  --gap: 20px;
  --maxw: 980px;
  --text: #eaf6f2;
  --shadow: 0 10px 30px rgba(2,8,12,0.6);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(16,185,129,0.06), transparent 15%),
              radial-gradient(1000px 500px at 90% 90%, rgba(6,182,164,0.04), transparent 15%),
              linear-gradient(180deg,var(--bg-1) 0%,var(--bg-2) 100%);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:48px;
  display:flex;
  justify-content:center;
}

/* Page layout: header, content, footer stacked */
.page{
  width:100%;
  max-width:var(--maxw);
  display:flex;
  flex-direction:column;
  gap:var(--gap);
}

/* Header */
.site-header{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 22px;
}
.logo{
  width:56px;
  height:56px;
  border-radius:12px;
  background: linear-gradient(135deg,var(--accent-1),var(--accent-2));
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  color:#042022;
  box-shadow: 0 8px 22px rgba(16,185,129,0.14);
}
.site-title{ margin:0; font-size:1.4rem; }
.tagline{ color:var(--muted); margin-top:6px; font-size:0.95rem; }

/* Container with main + sidebar */
.container{
  width:100%;
  display:grid;
  grid-template-columns: 1fr 320px;
  gap:var(--gap);
  align-items:start;
}

/* Card base */
.card{
  background: linear-gradient(180deg, var(--panel), rgba(255,255,255,0.01));
  border: 1px solid rgba(16,185,129,0.07);
  border-radius:var(--radius);
  padding:20px;
  box-shadow:var(--shadow);
  backdrop-filter: blur(6px) saturate(120%);
}

/* Main panel specifics */
.main-panel{
  min-height:360px;
}
.main-panel h2{ color:var(--accent-2); margin-top:0; }
.main-panel p{ color:var(--muted); }

/* Sidebar */
.sidebar{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:var(--radius);
  padding:16px;
  border:1px solid rgba(6,182,164,0.06);
  box-shadow: 0 8px 26px rgba(2,8,10,0.55);
}

/* Buttons */
.actions{
  display:flex;
  gap:12px;
  margin-top:16px;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 16px;
  border-radius:10px;
  font-weight:600;
  text-decoration:none;
  cursor:pointer;
  border:none;
}
.btn-primary{
  background: linear-gradient(90deg,var(--accent-1),var(--accent-2));
  color:#042022;
  box-shadow: 0 8px 24px rgba(16,185,129,0.16);
}
.btn-ghost{
  background:transparent;
  color:var(--accent-1);
  border:1px solid rgba(16,185,129,0.09);
}

/* Footer */
.site-footer{
  text-align:center;
  padding:12px 18px;
  color:var(--muted);
  font-size:0.9rem;
}

/* Responsive */
@media (max-width: 980px){
  .container{ grid-template-columns: 1fr; }
  .sidebar{ order:2; }
}